Upwind finite difference operators on uniform meshes are well known to be unsuitable for the numerical solution of singularly perturbed partial differential equations, in the sense that, in the neighbourhood of the boundary layers, the error in the numerical approximation may increase as the mesh is
Particle-Mesh Schemes for Advection Dominated Flows
β Scribed by Wayne Arter; James W. Eastwood
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 514 KB
- Volume
- 117
- Category
- Article
- ISSN
- 0021-9991
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β¦ Synopsis
Extended particle-in-cell (EPIC) schemes are considered with a view to applications in electrostatic drift-wave turbulence and ordinary hydrodynamical turbulence, where periodic boundary conditions are inappropriate. We treat issues relating to the dual particlemesh representation and to the need to follow particle orbits accurately. A successful application of EPIC to an advection dominated flow is demonstrated. The errors are quantified so that choosing suitable numerical parameters to obtain a result of a given accuracy is straightforward. m 1995 Academic Press, Inc.
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